Silica - Steven Universe OC

Okay, so, I've gotten myself into the Steven Universe fandom.
And, ive also thought up of a OC for it.
I guess this is Silica, and the gem doesn't look exactly right because I'm terrible at drawing them.
Her gem is on her cheek, and she is a homeworld gem (thus the yellow diamond on her clothing.)
Still not sure what her weapon is yet, though.